fimA-folDgenes linkage inSalmonellaidentifies a putative junctional site of chromosomal rearrangement in the enterobacterial genome

Autor: Giuseppe Satta, Patrizia Muscas, Alessandra Chiesurin, Gian Maria Rossolini
Rok vydání: 1994
Předmět:
Zdroj: Scopus-Elsevier
ISSN: 1574-6968
0378-1097
DOI: 10.1111/j.1574-6968.1994.tb06908.x
Popis: Analysis of the Salmonella chromosomal region located upstream of the fimA gene (coding for the major type 1 fimbrial subunit) showed a close linkage of this gene to the folD gene (coding for the enzyme 5,10-methylenetetrahydrofolate dehydrogenase/5, 10-methenyltetrahydrofolate cyclohydrolase), indicating that the fim gene cluster of Salmonella, unlike that of Escherichia coli, has no regulatory genes located upstream of fimA and apparently terminates with this gene. The respective locations of the fim and folD genes in the E. coli and Salmonella genetic maps suggests that the fimA-folD intergenic region of Salmonella encompasses a junctional site of a genetic rearrangement that probably originated from the different chromosomal location of the fim genes in these species.
Databáze: OpenAIRE